Rubber protective cover used on automobile battery binding post

Abstract

The utility model belongs to the technical field of rubber structural parts, and particularly relates to a rubber protective cover used on an automobile battery binding post. The rubber protective cover structurally comprises a bottom plate, a mounting hole, a cover body unit and a clamping groove, wherein the mounting hole is formed in the bottom plate and used for allowing a column to penetrate through, the cover body unit is arranged on the side face of the bottom plate in a clamped mode and used for covering the column, and the clamping groove is formed in the inner surface of the cover body unit. The protruding block is arranged on the side face of the bottom plate and used for being inserted into the clamping groove. The rubber protective cover at least has the beneficial effects that the rubber protective cover has an elastic clamping effect between the side surface of the bottom plate and the inner surface of the cover body unit and between the clamping groove and the convex block, so that a covering and protecting effect with sufficient strength can be provided for the binding post, and the clamping structure is relatively simple.

Description

Technical Field

[0001] This application belongs to the technical field of rubber structural components, and in particular relates to a rubber protective cover used on automotive battery terminals. Background Technology

[0002] The structure of an automotive battery terminal mainly consists of a post, a fastening nut, and a connecting bolt. The post is inserted into an insulating sheet, which allows the battery casing to be made of a metal material with poor insulation but high impact resistance.

[0003] In addition, the aforementioned fastening nuts are used to reinforce the mounting posts on the insulating sheet, and these fastening nuts are provided on the inner and / or outer surfaces of the insulating sheet. Finally, the wiring bolts are used to tighten the external wiring, ensuring adequate wire contact.

[0004] On the other hand, the protective covers used for automotive battery terminals are generally made of rubber. Their fixing function on the terminals can be provided in the following two ways: First, the protective cover only includes the cover body and does not include the base plate. The cover body is directly fitted onto the terminal through its own elasticity. Second, the protective cover includes the cover body and the base plate. The latter is connected to the terminal, and the former is then engaged with the latter, which also fully covers and protects the terminal.

[0005] Generally, the first type of protective cover mentioned above is a disposable product. It can be tightly fitted onto the terminal block. It is relatively thin and highly elastic. Its general shape in use is the outline of the terminal block. It can be removed by simply tearing it off.

[0006] The second type of protective cover is a reusable product, and its shape can be regarded as "box-shaped". Compared with the first type of protective cover, its impact resistance and collision protection are more prominent.

[0007] For example, Chinese utility model patent with authorization announcement number CN214898792U and authorization announcement date of 2021.11.26 discloses a waterproof battery terminal with a protective cover, which belongs to the second type of protective cover mentioned above. Its structure mainly includes: terminal, wiring part, connecting part, upper cover, U-shaped protective plate, lower cover, flange, elastic fastening assembly, fastening part, protrusion, through hole, fixing part, and limiting block.

[0008] The combination of the upper and lower covers in this utility model patent corresponds to the cover body and the base plate mentioned above. The main advantages of this combination are: the upper and lower covers are snapped together, the connection is stable, and the installation is convenient.

[0009] However, in actual use, the combination of the upper and lower covers has at least the following impractical problems: the structure of its elastic fastening components is relatively complex, making production relatively difficult and the failure rate relatively high. Utility Model Content

[0010] This application provides a rubber protective cover for use on automotive battery terminals. The technical problem to be solved is: how to make the rubber protective cover for automotive battery terminals have the advantage of relatively simple structure while having sufficient protective strength.

[0011] The technical solution adopted by this application to solve the above problems is: a rubber protective cover for use on automotive battery terminals, the structure including a base plate, a mounting hole disposed on the base plate and used to pass through the terminal, a cover unit disposed on the side of the base plate and used to cover the terminal, a locking groove disposed on the inner surface of the cover unit, and a protrusion disposed on the side of the base plate and used to insert into the locking groove.

[0012] A further preferred technical solution is that the cover unit includes an annular plate with the engagement groove on its inner surface for engaging the side of the bottom plate, and an end plate disposed on the annular plate.

[0013] A further preferred technical solution is that the cover unit further includes an anti-slip protrusion strip disposed on the outer surface of the annular plate and having the engagement groove.

[0014] A further preferred technical solution is that the cover unit further includes a connection slot disposed on the end face of the annular plate and used for passing through the external wiring.

[0015] A further preferred technical solution is that the cover unit further includes a thickened strip disposed on the outer surface of the annular plate, having the connecting groove, and used to increase the difficulty of bending deformation at the connecting groove.

[0016] A further preferred technical solution is that the cross-sectional shape of the protrusion is a semi-circle or an isosceles trapezoid.

[0017] A further preferred technical solution is that the mounting hole is also provided with an elastic ring for clamping the column.

[0018] A further preferred technical solution is that the base plate is also provided with an elastic sheet for covering the connecting groove by engaging with the inner surface of the annular plate.

[0019] A further preferred technical solution is that the shape of the base plate is elliptical, circular, or rectangular.

[0020] A further preferred technical solution is that the number of protrusions is 1 or 3, and the length is 2.0-4.0cm.

[0021] The beneficial effects of this application include at least the following three points.

[0022] First, the rubber protective cover has an elastic clamping effect between the side of the base plate and the inner surface of the cover unit, as well as between the locking groove and the protrusion, which can provide the terminal block with a sufficiently strong protective effect, and the above clamping structure is relatively simple.

[0023] Secondly, the cover unit has a thickened structure at the locking groove and the connecting groove, so that the former can provide relatively greater locking strength and the latter is not easy to bend and deform.

[0024] Third, the base plate is also equipped with an elastic sheet, which allows the connecting slot to be covered and sealed when not in use, further improving the comprehensive coverage of the rubber protective cover. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the cover unit in this application.

[0026] Figure 2 This is a schematic diagram illustrating one method of using the base plate in this application.

[0027] Figure 3 This is a schematic diagram of the first shape structure of the base plate in this application.

[0028] Figure 4 This is a schematic diagram of the second shape structure of the base plate in this application.

[0029] Figure 5 This is a schematic diagram showing the position and shape of the elastic sheet in this application.

[0030] Figure 6 This is a schematic diagram illustrating the usage of the elastic ring and elastic sheet in this application.

[0031] Figure 7 This is a schematic diagram showing the location of the corner of the connecting groove that is most prone to bending and deformation if the thickening strip is not provided in this application.

[0032] Figure 8 This is a schematic diagram of one shape of the locking groove in this application.

[0033] Figure 9 This is a schematic diagram of the first structural style of a column in the prior art.

[0034] Figure 10 This is a schematic diagram of the second structural style of a column in the prior art.

[0035] The meanings of the markings in the diagram are as follows.

[0036] a) Column body; b) External wiring; c) Insulating sheet; d) Battery casing; e) Wiring bolt; f) Fastening nut; g) End corners most prone to bending and deformation.

[0037] 1. Base plate; 2. Mounting hole; 3. Cover unit; 4. Engaging groove; 5. Protrusion; 6. Elastic ring; 7. Elastic sheet;

[0038] Annular plate 301, end plate 302, anti-slip protrusion strip 303, connecting groove 304, thickened strip 305. Detailed Implementation

[0039] The following description is merely a preferred embodiment of this application and is not intended to limit the scope of this application.

[0040] like Figures 1-10 As shown, a rubber protective cover for use on automotive battery terminals includes a base plate 1, a mounting hole 2 disposed on the base plate 1 for passing through a post a, a cover unit 3 engaged on the side of the base plate 1 for covering the post a, an engagement groove 4 disposed on the inner surface of the cover unit 3, and a protrusion 5 disposed on the side of the base plate 1 for inserting into the engagement groove 4.

[0041] In this embodiment, the rubber protective cover can be made of any one of silicone rubber, neoprene rubber, and EPDM rubber, thus possessing outstanding insulation and flame retardant properties, as well as sufficient and suitable elasticity.

[0042] In the structure of this rubber protective cover, the cover unit 3 and the locking groove 4 are integrally formed and can be regarded as the "upper cover" of the protective cover. The bottom plate 1, the mounting hole 2 and the protrusion 5 are integrally formed and can be regarded as the "lower cover" of the protective cover.

[0043] This rubber protective cover has the advantages of stable installation and sufficient protective strength because:

[0044] First, the base plate 1 can achieve sufficient installation stability on the column a, and its first installation method corresponds to the attached... Figure 9 The second installation method corresponds to the following: A column a with a "larger top and smaller bottom" shape is used, with the larger upper end of column a pressing against the upper surface of the base plate 1. Figure 10 The column a is matched with two fastening nuts f, with the upper fastening nut f pressing on the upper surface of the base plate 1. Both methods can sufficiently fix the base plate 1 and the column a relative to each other.

[0045] Secondly, the side of the base plate 1 and the inner surface of the cover unit 3, as well as the engagement groove 4 and the protrusion 5, have an elastic clamping effect, thereby fully installing the cover unit 3 on the base plate 1, and ultimately ensuring that the rubber protective cover is installed firmly, not easy to fall off, and has sufficient protective strength.

[0046] On the other hand, the rubber protective cover also has the advantage of a relatively simple structure. The upper and lower cover structures do not have a large number of small parts, which makes it easy to produce and results in a low failure rate.

[0047] The mounting hole 2 is circular or rectangular in shape and relatively small in size, ensuring that neither the upper part of the column a nor the fastening nut f can pass through it. The cover unit 3 is shaped to fit the base plate 1, ensuring that the inner surface of the former can fully and strongly elastically clamp the side of the latter.

[0048] The cover unit 3 includes an annular plate 301 with the engagement groove 4 on its inner surface for engaging the side of the bottom plate 1, and an end plate 302 disposed on the annular plate 301.

[0049] In this embodiment, the length direction of the engaging groove 4 is parallel to the axial direction of the annular plate 301. The length of the former can be less than or equal to the axial length of the latter, ensuring that the protruding block 5 can be fully inserted into the engaging groove 4.

[0050] At this time, the end face of the annular plate 301 presses against the insulating sheet c, which is the correct way to cover the rubber protective cover. On the other end face of the annular plate 301, the end plate 302 is provided, thus forming a complete cover structure.

[0051] The cover unit 3 also includes an anti-slip protrusion 303 disposed on the outer surface of the annular plate 301 and provided with the engaging groove 4.

[0052] In this embodiment, the length of the anti-slip protrusion 303 is greater than or equal to the length of the engaging groove 4, and the number of both is equal.

[0053] The anti-slip protrusion 303 has at least the following functions:

[0054] First, the anti-slip protrusion 303 is raised, and when the user pinches the anti-slip protrusion 303, a relatively large static friction force can be obtained, which makes the removal of the cover unit 3 more convenient and efficient.

[0055] Secondly, this allows the cross-sectional dimensions of the engaging groove 4 to be relatively larger, thereby achieving a greater and more stable elastic clamping strength at the protrusion 5.

[0056] The cover unit 3 also includes a connection slot 304 disposed on the end face of the annular plate 301 and used for passing through the external wiring b.

[0057] In this embodiment, the connecting slot 304 is formed from the end of the annular plate 301 that is not installed with the end plate 302, and its opening depth direction is parallel to the axial direction of the annular plate 301, and the opening depth is less than the axial length of the annular plate 301.

[0058] The number of the connecting slots 304 is 1 or 2, and the number of external wires b is 2, the latter of which can pass through one of the connecting slots 304 after being closed.

[0059] The cover unit 3 also includes a thickened strip 305 disposed on the outer surface of the annular plate 301, having the connecting groove 304, and used to increase the difficulty of bending deformation at the connecting groove 304.

[0060] In this embodiment, if the thickening strip 305 is not provided, the corner g, which is most prone to bending and deformation, will easily warp outwards, causing deformation at the connecting groove 304 and exposing the battery terminal, which will greatly reduce the protective comprehensiveness of the protective cover. Conversely, this is the function of the thickening strip 305.

[0061] The working principle of the thickened strip 305 is as follows: the shape of the corner g, which is most easily bent and deformed, was originally a single piece. After the thickened strip is installed, the shape of the corner becomes "L-shaped". Compared with the original shape, it can be regarded as adding a new "reinforcing rib" structure, so it is not easy to deform or warp outward.

[0062] In the axial direction of the annular plate 301, the size of the connecting slot 304 is less than or equal to the size of the thickened strip 305, and the shape of the connecting slot 304 is rectangular. The aforementioned size is its length. At the same time, the width of the connecting slot 304 is relatively small, so that the external wire b can be passed outward.

[0063] The cross-sectional shape of the protrusion 5 is semi-circular or isosceles trapezoid.

[0064] In this embodiment, the cross-sectional shape of the protrusion 5 is consistent with the cross-sectional shape of the engaging groove 4.

[0065] The mounting hole 2 is also provided with an elastic ring 6 for clamping the column a.

[0066] In this embodiment, the first and second installation methods of the base plate 1 have the advantage of relatively high fixing strength, but the disadvantage is that it requires operation of the column a and / or fastening nut f, and it is not easy to remove after installation.

[0067] The first and second installation methods described above correspond to protective covers with relatively small mounting holes 2. The second type of protective cover, on the mounting hole 2, features a relatively large mounting hole 2 with a commonly used type of elastic ring 6 made of relatively elastic rubber.

[0068] At this time, the installation method of the overall "bottom cover" structure of the base plate 1, mounting hole 2 and elastic ring 6 is as follows: the mounting hole 2 is aligned with the column a and directly snapped on, so that the elastic ring 6 is deformed and pressed at the side position of the column a, thereby fixing the column a and the base plate 1 relatively. This is the third installation method of the base plate 1.

[0069] The advantages and disadvantages of the third installation method are exactly the opposite of those of the first and second installation methods. Its advantages are:

[0070] First, it applies to the vast majority of styles of the column a, even if the column a does not have a large upper end and does not have a fastening nut f exposed above;

[0071] Secondly, the "lower cover" structure facilitates installation and removal; please refer to the attached document for details. Figure 6 .

[0072] Correspondingly, the main disadvantage of the third installation method is that the installation strength is relatively small, and the rubber protective cover may fall off the entire column a.

[0073] The base plate 1 is also provided with an elastic sheet 7 that covers the connecting slot 304 by engaging with the inner surface of the annular plate 301.

[0074] In this embodiment, the position and number of the elastic pieces 7 correspond to the connecting slots 304.

[0075] When the annular plate 301 is correctly installed on the base plate 1, the elastic sheet 7 is attached to the inner surface of the annular plate 301, or is bent outward or inward by the connecting groove 304 through which it passes.

[0076] The thickness of the elastic sheet 7 is less than that of the elastic ring 6, and it is more elastic. When it is attached to the inner surface of the annular plate 301, it completely covers the connecting groove 304, that is, the size of the elastic sheet 7 is larger than that of the connecting groove 304.

[0077] The base plate 1 is elliptical, circular, or rectangular in shape.

[0078] In this embodiment, the shape of the end plate 302 and the cross-sectional shape of the annular plate 301 are consistent with those of the base plate 1.

[0079] The number of protrusions 5 is one or three, and the length is 2.0-4.0cm.

[0080] In this embodiment, since the number of connecting slots 304 may be one, the above-mentioned "upper cover" structure does not have the characteristic of being able to be fastened and installed after the left and right sides are swapped when fastening the "lower cover" structure.

[0081] Therefore, by setting an odd number of protruding blocks 5, the "upper cover" and "lower cover" have a unique and correct installation orientation when they are fastened together, ensuring that the elastic piece 7 correctly aligns with the connecting slot 304. Even if the elastic piece 7 is bent and deformed by the external wiring b, it can still appropriately cover the connecting slot 304, thus improving the sealing performance of the protective cover.

[0082] Finally, the phrase "used in" in this application means that it can be used, not only used. For example, the rubber protective cover can also be used for distribution box terminals, control cabinet terminals, motor terminals, and transformer terminals.

[0083] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various modifications can be made without departing from the spirit of this application. These are non-inventive modifications and are protected by patent law as long as they are within the scope of the claims of this application.

Claims

1. A rubber protective cover for use on automotive battery terminals, characterized in that: The structure includes a base plate (1), a mounting hole (2) disposed on the base plate (1) and used to pass through the column (a), a cover unit (3) engaged on the side of the base plate (1) and used to cover the column (a), a locking groove (4) disposed on the inner surface of the cover unit (3), and a protrusion (5) disposed on the side of the base plate (1) and used to insert into the locking groove (4).

2. A rubber protective cover for use on automotive battery terminals according to claim 1, characterized in that: The cover unit (3) includes an annular plate (301) with the engagement groove (4) on its inner surface and used to engage the side of the bottom plate (1), and an end plate (302) disposed on the annular plate (301).

3. A rubber protective cover for use on automotive battery terminals according to claim 2, characterized in that: The cover unit (3) also includes an anti-slip protrusion (303) disposed on the outer surface of the annular plate (301) and provided with the engagement groove (4).

4. A rubber protective cover for use on automotive battery terminals according to claim 2, characterized in that: The cover unit (3) also includes a connection slot (304) disposed on the end face of the annular plate (301) and used for the external wiring (b) to pass through.

5. A rubber protective cover for use on automotive battery terminals according to claim 4, characterized in that: The cover unit (3) also includes a thickened strip (305) disposed on the outer surface of the annular plate (301), having the connecting groove (304) and used to increase the difficulty of bending deformation at the connecting groove (304).

6. A rubber protective cover for use on automotive battery terminals according to claim 1, characterized in that: The cross-sectional shape of the protrusion (5) is semi-circular or isosceles trapezoid.

7. A rubber protective cover for use on automotive battery terminals according to claim 1, characterized in that: The mounting hole (2) is also provided with an elastic ring (6) for clamping the column (a).

8. A rubber protective cover for use on automotive battery terminals according to claim 4, characterized in that: The base plate (1) is also provided with an elastic sheet (7) for covering the connecting slot (304) by engaging with the inner surface of the annular plate (301).

9. A rubber protective cover for use on automotive battery terminals according to claim 1, characterized in that: The base plate (1) is elliptical, circular or rectangular in shape.

10. A rubber protective cover for use on automotive battery terminals according to claim 1, characterized in that: The number of protrusions (5) is 1 or 3, and the length is 2.0-4.0cm.

Images